MTA Multi-Server Install

I installed a virtual ZCS Network Edition 4.5.10 server with all the Zimbra compnents in a Xen Virtual Environmet on my LAN using CentOS 5.1. In my DMZ I built ZCS Network Edition 4.5.10 server with just MTA and SNMP also on CentOS 5.1 on a physical server. The reason for an MTA Relay in our DMZ is for our external users to use this server instead of the LAN server to relay mail.

I am new to Zimbra and I used the Multi-Server installation document to perform the install. First off I can not get to the Admin console of the DMZ MTA server but I can communicate completely between the 2 servers; meaning ping, telnet to ports 25, 110, 389; but not 7071 except on the LAN Virtual Server. On the LAN Zimbra Server Web Admin console I do not see this new server under the Servers tab and do not see where I can add it.

I go ahead and enter the unconfigured items, pointing to the LAN Zimbra Server as the LDAP master host and MTA Auth Host. I hit 'S' to save and 'Q' to quit, 'Q' asks me "Quit without applying changes? [No]" I type Y since I had already saved hit 'S' to save the config.

On the LAN Zimbra Server I am using on External Active Directory as an authentication service. I have pointed the LDAP Master Host to the AD Domain credentials as well with no luck.

You need to hit "a" to apply the config. Saving the config saves it to a separate file, but it does not apply it to the zimbra config. After you apply the config, you should be able to access the admin console.